I-DIN 30670-1yinkqubo yokukhupha imigangatho emithathu eyenza ipolyethylene (3LPE) Ukwaleka kumphezulu we longitudinally okanye spiral welded kunyeimibhobho yentsimbi engenamthungoukuwakhusela ekudlekeni.
Isetyenziswa ikakhulu kwiinkqubo zemibhobho engcwatyiweyo okanye entywiliselweyo ukuthuthwa kolwelo okanye iigesi.
Qaphela: I-DIN 30670 yahlulwe yangamacandelo amabini kushicilelo lwamva nje luka-2024 ngokuxhomekeke kwinkqubo yokuvelisa, oko kukuthi, i-DIN 30670-1 igquma ithumbu kunye nenxeba lokugquma i-polyethylene ekhutshiweyo, kunye ne-DIN 30670-2 igubungela iintlobo ze-sintered kunye ne-flame sprayed.
Zahlulwe zibe ziindidi ezimbini ngokweqondo lobushushu lokuyila, ezizizouhlobo N kunye nohlobo S.
| Uhlobo | Ubushushu boyilo (°C) |
| N | -20 ukuya + 60 |
| S | -40 ukuya + 80 |
kwayeISO 21809-1ihambelana neklasi A kunye neklasi B, ngokulandelelanayo.
I-1st layer ye-Epoxy resin layer, i-epoxy resin powder kufuneka isetyenziswe.
I-2nd Adhesive layer, enokuthi ibe ngumgubo okanye i-extruded coated.
Umaleko we-3 we-polyethylene, inkqubo ye-tube extrusion, okanye inkqubo ye-extrusion yomoya.
Umbhobho Extrusion:
Kule nkqubo, izinto ze-polyethylene zikhutshwe ngokuthe ngqo kwifom ye-tubular eqhubekayo, ethi ifakwe kwipayipi yensimbi.
Le ndlela idla ngokusetyenziselwa imibhobho yobubanzi obuncinci kwaye iqinisekisa ukufana kunye nokuqhubeka kwengubo.
I-extrusion yomoya:
Kule nkqubo, i-polyethylene ikhutshwe ngendlela yomgca kwaye inxeba phezu kombhobho wensimbi.
Le ndlela ifanelekile kwimibhobho yobubanzi obukhulu okanye obungalinganiyo kwaye ivumela iingubo eziguquguqukayo kwiipayipi ezinzima okanye ezinkulu.
Ngokuxhomekeke kwiimfuno ezithile zeprojekthi, uluhlu olongezelelweyo lokukhusela oomatshini lungongezwa kwi-3LPE.
Izinto ezisetyenziswa ngokuqhelekileyo ziqukaikhonkrithi(jonga kwi-ISO 21809-5),iplastiki yefayibha eyomelezwe ngeglasi, okanye udaka lwesamente(jonga kwi-DN N 30340-1).
Ukuqinisekisa ukomelela okulungileyo kokucheba, kuyimfuneko ukuba urhabaxa okanye ucinezele umphezulu we-polyethylene.
Unyango olunjalo lunceda ukwandisa ukunamathela phakathi koluhlu olongezelelweyo lokukhusela kunye ne-polyethylene yokugqoka.
Epoxy Resin Layer Ukutyeba
Ubuncinci be-80um.
Ukutyeba koMaleko okuncamathelayo
Ubuncinci be-150um.
Ukutyeba okupheleleyo kokutyabeka
Ngokuxhomekeke kubukhulu obuqhelekileyo bombhobho wensimbi, ubukhulu bomgangatho wokukhusela i-corrosion buya kuhluka.
Ngobunzima obupheleleyo boluhlu lwe-3LPE, i-DIN 30670-1 ihlula iiklasi ezintathu ukuhlangabezana neemfuno ezahlukeneyo zokwakha.n,v, kunye s.
IBakala n: Kwiimeko eziqhelekileyo, ubukhulu bebakala n ngokuqhelekileyo banele.
Kwiingubo ze-polyethylene, ubukhulu be-1 mm busetyenziselwa ngokukodwa ukukhusela i-corrosion, ngelixa ubuninzi obusele busetyenziselwa ukunyusa umthamo wokuthwala umthwalo we-mechanical layer yokukhusela.
IBakala v: Ukuba umthwalo womatshini uyanda (ukuthutha, ukugcinwa, ukubeka, umgangatho othile, ukunyuka kweemfuno), ubuncinci bokugubungela kufuneka bunyuswe ngo-0.7 mm, oko kukuthi v = n + 0.7 mm.
IBanga s: Ubukhulu obukhethekileyo bokugquma obungaphezulu kuno-v kunokuvunyelwana malunga nokuhlangabezana neemfuno zeprojekthi ethile, kwaye ezo ngqindilili zokugquma ezilungelelanisiweyo zibhalwe njengeziBanga.
I-150mm ± 20mm, i-engile ye-bevel yobunzima bokugquma kufuneka ingabi ngaphezu kwe-30 °.
I-epoxy kunye ne-adhesive layers iya kususwa ubuncinane kwi-80 mm ukusuka ekupheleni kombhobho.Uluhlu lwe-epoxy luya kushiywa luphuma kumbhobho we-polyethylene-coated ekupheleni kokungabikho ngaphantsi kwe-10 mm.
Ukumisela ubude, ukulinganisa ukusuka kwingcambu yombhobho ukuya ekuqaleni kwe-diagonal cut end of layer protection layer.
Iziphene ngokubanzi
Ukungafezeki okuncinci kunye nomonakalo kumphezulu wentsimbi engafikelelwanga.
Imingxuma kuluhlu oluphezulu lwePE;
Iindawo ezincinci ezinokhuselo olungaphelelanga;
Ukufakwa kunye neebhubhu zomoya kwinqanaba eliphezulu;
Ukubambelela kwizinto zangaphandle;
ukuqhawuka kobuso;
Izibonda ezincinci kwi-coating.
Ezi nzakala ezincinci zivumelekile ukuba zilungiswe kwaye akukho mda kwindawo enokulungiswa.
Iziphene eziMandundu
Umonakalo wokugubungela uqonde ngqo kumphezulu wepayipi yensimbi.
Indawo yeziphene ezimele zilungiswe mayingadluli kwi-10 cm².Inombolo evumelekileyo yeziphene eziza kulungiswa yi-1 i-defect kwi-1 mitha yobude bombhobho.Ngaphandle koko, umbhobho kufuneka urekhodwe.
ISO 21809-1: Ngokukodwa kwi-polyethylene yangaphandle ye-threethylene kunye ne-polypropylene (3LPE kunye ne-3LPP) yokugqoka iipayipi zetsimbi ezisetyenziswa kwiinkqubo zokuhambisa kwishishini leoli kunye negesi.
CSA Z245.21: Ichaza i-polyethylene anticorrosion yangaphandle yokugubungela kumbhobho wensimbi osetyenziswa kwiinkqubo zokuhambisa.
AWWA C215: Iingubo zangaphandle ze-polyethylene anti-corrosion ezifanelekileyo kwimibhobho yokuhambisa amanzi.Nangona isetyenziswa kakhulu kwiinkqubo zokuhambisa amanzi, inokuninzi okufanayo kunye ne-DIN 30670 ngokubhekiselele kwizinto kunye nobuchwepheshe bokusebenzisa.
Sijonge phambili ekusebenzisaneni nawe ukubonelela ngeyona mbhobho yentsimbi esemgangathweni kunye nezisombululo zokwaleka ezichasene nomhlwa kwiiprojekthi zakho.Nceda uzive ukhululekile ukuba uqhagamshelane nathi ngeenkcukacha ezingaphezulu zemveliso, siyavuya ukukunceda ufumane eyona ndlela ingcono yombhobho wentsimbi kwiimfuno zakho!
